| 1 | 检查 | 檢查 | jiǎn chá | jian3 cha2 | inspection; to examine; to inspect; Classifiers: 次 | | |
| 2 | 调查 | 調查 | diào chá | diao4 cha2 | investigation; inquiry; to investigate; to survey; survey; (opinion) poll; Classifiers: 项 | | |
| 3 | 查 | 查 | chá | cha2 | to research; to check; to investigate; to examine; to refer to; to look up (e.g. a word in a dictionary) | | |
| 4 | 审查 | 審查 | shěn chá | shen3 cha2 | to examine; to investigate; to censor out; censorship | | |
| 5 | 侦查 | 偵查 | zhēn chá | zhen1 cha2 | to detect; to investigate | | |
| 6 | 搜查 | 搜查 | sōu chá | sou1 cha2 | to search | | |
| 7 | 查明 | 查明 | chá míng | cha2 ming2 | to investigate and find out; to ascertain | | |
| 8 | 查出 | 查出 | chá chū | cha2 chu1 | to find out; to discover | | |
| 9 | 查看 | 查看 | chá kàn | cha2 kan4 | to look over; to examine; to check up; to ferret out | | |
| 10 | 清查 | 清查 | qīng chá | qing1 cha2 | to investigate thoroughly; to carefully inspect; to verify; to ferret out (undesirable elements) | | |
| 11 | 查处 | 查處 | chá chǔ | cha2 chu3 | to investigate and handle (a criminal case) | | |
| 12 | 普查 | 普查 | pǔ chá | pu3 cha2 | census; general survey; general investigation; reconnaissance survey | | |
| 13 | 查阅 | 查閱 | chá yuè | cha2 yue4 | to consult; to refer to; to look sth up in a reference source | | |
| 14 | 查清 | 查清 | chá qīng | cha2 qing1 | to find out; to ascertain; to get to the bottom of; to clarify | | |
| 15 | 查没 | 查沒 | chá mò | cha2 mo4 | to confiscate | | |
| 16 | 波德里查 | 波德里查 | bō dé lǐ chá | Bo1 de2 li3 cha2 | Podgorica, capital of Montenegro (Tw) | | |
| 17 | 查检 | 查檢 | chá jiǎn | cha2 jian3 | to check; to consult; to look up | | |
| 18 | 查访 | 查訪 | chá fǎng | cha2 fang3 | to investigate | | |
| 19 | 查封 | 查封 | chá fēng | cha2 feng1 | to sequester; to seize (assets); to seal up; to close down | | |
| 20 | 追踪调查 | 追蹤調查 | zhuī zōng diào chá | zhui1 zong1 diao4 cha2 | follow-up study; investigative follow-up | | |
| 21 | 查点 | 查點 | chá diǎn | cha2 dian3 | to check; to tally; to inventory | | |
| 22 | 查德 | 查德 | chá dé | Cha2 de2 | Chad (Tw) | | |
| 23 | 查抄 | 查抄 | chá chāo | cha2 chao1 | to take inventory of and confiscate a criminal's possessions; to search and confiscate (forbidden items); to raid | | |
| 24 | 查办 | 查辦 | chá bàn | cha2 ban4 | to investigate and handle (a criminal case) | | |
| 25 | 本底调查 | 本底調查 | běn dǐ diào chá | ben3 di3 diao4 cha2 | background investigation | | |